Real Science 4 Kids: Chemistry Level I; Chapter 7

I run this class at my home with two other families.  We do a review of the chapter that the kids read at home and then preform experiments together on Science Fridays.  The experiment for Chapter 7 is great however it doesn't work for a class due to the time for the mixture to separate. 

Here's how I worked around it, we did the experiment using paper towels, food coloring and a bowl of water.  The colors separated (not all so be sure and check before running class) and were done separating before class was over.  As for the experiment in the curriculum, we prepped the coffee filters and showed how to set up the experiment.  Each kid was sent home with prepped filters, colored ink pens and the ability to run their experiment at home themselves.